Utterly Mad

Hm, I've got an odd idea.
Would anybody be interested in a shared world thread?
Like essentially we collectively decide on setting(IE Fantasy, Futuristic, apocalypse, to name a few), get down a rough time line (well maybe), figure out the major details, and then we all write stuff in that world. I'm probably not thinking about something, but I think this gets the general idea across, and I think it'd be interesting to see how several different people tackle the same setting in the same world.